package org.drools.jsr94.rules;
/*
* $Id: Jsr94FactHandle.java,v 1.14 2005/02/04 02:13:38 mproctor Exp $
*
* Copyright 2003-2004 (C) The Werken Company. All Rights Reserved.
*
* Redistribution and use of this software and associated documentation
* ("Software"), with or without modification, are permitted provided that the
* following conditions are met:
*
* 1. Redistributions of source code must retain copyright statements and
* notices. Redistributions must also contain a copy of this document.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. The name "drools" must not be used to endorse or promote products derived
* from this Software without prior written permission of The Werken Company.
* For written permission, please contact bob@werken.com.
*
* 4. Products derived from this Software may not be called "drools" nor may
* "drools" appear in their names without prior written permission of The Werken
* Company. "drools" is a registered trademark of The Werken Company.
*
* 5. Due credit should be given to The Werken Company.
* (http://drools.werken.com/).
*
* THIS SOFTWARE IS PROVIDED BY THE WERKEN COMPANY AND CONTRIBUTORS ``AS IS''
* AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE WERKEN COMPANY OR ITS CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*/
import javax.rules.Handle;
import org.drools.common.DefaultFactHandle;
import org.drools.runtime.rule.WorkingMemoryEntryPoint;
/**
* The Drools implementation of the <code>Handle</code> interface which provides
* a marker interface for Drools-specific object identity mechanism. When using
* the <code>StatefulRuleSession</code> objects that are added to rule session
* state are identified using a Drools-supplied <code>Handle</code>
* implementation.
* <p/>
* <code>Handle</code>s are used to unambigiously identify objects within the
* rule session state and should not suffer many of the object identity issues
* that arise when using muliple class loaders, serializing
* <code>StatefulRuleSessions</code>, or using <code>Object.equals</code> or
* <code>object1 == object2</code> reference equality.
*/
public class Jsr94FactHandle extends DefaultFactHandle
implements
Handle {
private static final long serialVersionUID = 510l;
/**
* Constructs a new <code>Handle</code>.
*
* @param id A unique <code>Handle</code> id.
* @param recency A value indicating the recency of this <code>Handle</code>
* (more recently created <code>Handle</code>s have greater values
* than <code>Handle</code>s created further in the past)
*
* @see org.drools.conflict.RecencyConflictResolver
*/
Jsr94FactHandle(final long id,
final Object object,
final long recency,
final WorkingMemoryEntryPoint entryPoint) {
super( (int) id,
object,
recency,
entryPoint );
}
}